html,
body{
  height: 100%;
  font-family: 'Microsoft YaHei';
  color: #333;
  background-color:#fff;
}
*{
  box-sizing: border-box;
  /*去掉浏览器中轮播图的警告*/
  touch-action: pan-y;
}
h2{
  margin-top: 0;
}